| Regimental number | 3273 |
| Other Names | Charles Christopher |
| Religion | Presbyterian |
| Occupation | Bridge contractor |
| Address | Thanes Creek, Warwick, Queensland |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Father, J S Clarkson, Thanes Creek, Warwick, Queensland |
| Enlistment date | 26 July 1915 |
| Rank on enlistment | Private |
| Unit name | 9th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/26/3 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A48 Seang Bee on 21 October 1915 |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 49th Battalion |
| Fate | Returned to Australia 23 September 1918 |
| Family/military connections | Brothers: 5004 Pte David John CLARKSON, 31st Bn, returned to Australia, 18 December 1918; 3277 Pte Kenneth Douglas CLARKSON, 49th Bn, returned to Australia, 23 July 1919. |
